Science Response 2018/001

Recovery potential assessment for Shortface Lanx (Fisherola nuttalli)

Context

After the Committee on the Status of Endangered Wildlife in Canada (COSEWIC) assesses an aquatic species as Threatened, Endangered or Extirpated, Fisheries and Oceans Canada (DFO) undertakes a number of actions required to support implementation of the Species at Risk Act (SARA). Many of these actions require scientific information on the current status of the wildlife species, threats to its survival and recovery, and the feasibility of recovery. Formulation of this scientific advice has typically been developed through a Recovery Potential Assessment (RPA) that is conducted shortly after the COSEWIC assessment. This timing allows for consideration of peer-reviewed scientific analyses into SARA processes including recovery planning.

Shortface Lanx (Fisherola nutalli) was assessed by COSEWIC in the spring of 2016 as Endangered (COSEWIC 2016). In Canada, Shortface Lanx are confined to the Canadian portion of the Columbia River; globally, they are only found in the Columbia River system (Frest and Johannes 1995, 1997, 2000). Very little is known about this species. The state of knowledge is found within a few text books, field reports and the COSEWIC assessment. Normally when a RPA is undertaken a working paper is developed and a regional peer review is held. Given the paucity of data and lack of both internal and external expertise, the Science Response format was chosen to summarize the information and respond to the elements of the terms of reference in the most efficient and effective way possible.

In support of listing recommendations for Shortface Lanx, DFO Science has been asked to undertake a RPA, based on the national RPA Guidance. The advice in the RPA may be used to inform both scientific and socio-economic aspects of the listing decision, development of a recovery strategy and action plan, and to support decision making with regards to the issuance of permits or agreements, and the formulation of exemptions and related conditions, as per sections 73, 74, 75, 77, 78 and 83(4) of SARA. The advice in the RPA may also be used to prepare for the reporting requirements of SARA s.55. The advice generated via this process will update and/or consolidate any existing advice regarding Shortface Lanx.

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